Also, since your mechanic says you need a tuneup anyway, you may want to check the condition of your wires/wire ends.I had an erratic shaking idle with my 560 and although I changed out my ovp,my 02 sensor and even a cold start injector (because it was more prevalent when it warmed up), I replaced my old wires with new Beru's and its been smooth sailing ever since (Iwas gonna replace the idle contro valve but did the tune up first). Great mpg and no shakes!
My back seat doesn't recline if the door is open either.Good luck!
1970 250C SOLD
1971 250C SOLD